Stop motion mechanism foe winding ans twisting machines



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s'TofP-MOTIONMBGHANISM PoR WIND-11m YMID'TwsTING MAoHINEs,'-&G; No.244,538. Patented July 119 1881.

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J. BOYD. STOP MOTION MBOHANISM FOR WINNING AND TWISTING MACHINES, 6m.No, 244,538.

Patented July 19, 1881.-

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UNITED STATES PATENT OFFICE.

JOHN BOYD, OF GLASGOW, SCOTLAND. y

vSTOP-MOTION MECHANISM FOR WlNDlNG AND TWISTING MACHINES, &c.

SPECIFICATION forming part of Letters Patent No. 244,538, dated July 19,1881.

Application iiledNoyember 30, 1880. (No model.) Patented in England duly21, 1879.

To all whom it may concern:

Be it known that I, JOHN BOYD, a subject of the'Queeu of Great Britainand Ireland, re',- siding in Glasgow, Scotland, have invented cer.-

tain Improvements in Stop -Motion Mechanism for Winding and Twistin gMachines, Ste., (patented in England July 2l-A. D. 1879, N o. 2,953,) ofwhich the following is a specification.

My invention `relates to stop-motions .for

1.o twisting and winding machines and other Inachines of analogouscharacter; and the main feature of my invention consists in soconstructing the machine that the tube or spindle carrying the bobbin ismade to controla stop-motion trigger, another 'prominent feature of myinvention consisting of mechanism, described hereinafter, for elevatingthe upper feed-roller above the driven rollers, and forl seizing 'the.threads in obedience to the action of. a'trigger or triggers on thebreakage or failure of one or more of the threads.

Other features of my vinvention are too fully explained hereinafter toneed preliminary description; q f i' '2 5 Figurel, Sheet 1, isaverticalsectionof sufeient of a winding and twisting machine to give ageneral'view of my improvements ,"Fi gs. 2 and 3, Sheet 2, an ,enlargedvertical section of part of Fig. 1,A showing some of the operating partsin different positions; Fig. 4, Sheet 3, a perspective view of Fig. 3 5Fig. 5, a detached view of part of Figf; Fig. 6, a detached view of partof Figs. 2 and 3,' and Fig. 7 a view vof a modification.

, The lend frames, A, of the machine are conneeted together bylongitudinal rails B, B', B2, and B3, as in other |machines of the classto which my invention relates, O being one of the winding-spindlesdriven from a pulley or drum,

4o F, 4on the driving-shaft G by a band, D, which passes round a groovedpulley on the said spindie, the latter being provided with an ordinaryhier, a, fortwisting the yarn and directing it to the bobbin c, whichrests on the lifting-rail b,

There are in the present instance four threads to be twisted and wound,these threads being derived from'as manybobbins, which are shown mostclearly in Figs. 2 andB. j Each bobbin H Vlits snugly, but so as to turnfreely, on a tube,

5e h, Fig. 2, andrests .on a carrier,I,' intowhich the tube` is tightlytted, both tube and carrier being supported by a xed spindle, J, theapex of which is adapted to a recess in a lilling-piece fitted into theupper portion of the tube, the fixed spindle being carried by a bracket,K, on 5 5 the under side of a board, L, secured. to the rail B of themachine. From each carrier I, beneath the board L, projects a short arm,f, connected by a cord, f', to an arm, h', of the trigger M, which willbe more particularly Ie- 6o ferred to hereinafter. The weight of the armi of the said trigger is slightly in excess of that of the arm j, whichis provided with an adjustable counter-balance for insuring thispreponderance of the arm z'. From the carrier above 65 the'boardL'projects an arm or crank, k, having averticalpin, 7c', against whichthe thread bears, the tension on the thread bein g so exerted on the armthat it tends to turn the carrier and to maintain the triggerinthe'position shown 7o in Fig. 2. The perspective view, Fig. 6,illustrates` the manner of limiting the movement o 'the carrier by stopson'the bracket.

In machines in which the bobbins turn at a high speed, or where there isfriction enough 7 5 of the bobbin on'the carrier, the crank-pins maybe-dispensed with and the cord simply coiled round the tube or a spindleadapted to bearings.

i The threadsv from the four bobbins pass 8o through an eye, g, thenceover the feed-rollers N N and beneath the upper feed-roller, P, to thehier, by which they are twisted and wound round the bobbin c.

The feed-rollers N-N have journals adapted 8 5 to bearings on the frame,as usual, and are driven from the shaft G through the medium ofappropriate gearing, as indicated by dotted lines lin Fig. 1, andhereinafter .referred to.

The upper roller, P, (best observed in Fig. 9o 5,) is supported by therollers NN', and by its weight presses the four threads .against theserollers as long as all the four threads remain unbroken; but when anyone or more of these threads is broken or fails arod, Q, owing tomechanism explained hereinafter, willinstantly rise and elevate theroller l?, which will be supported by a concave plate, m, on the upperend of the rod, all the,threads beillfg then grasped and confinedbetween the plate and roo the roller.

Y Referring to Fig. 5, it will be noticed that a grooved journal, p',projects from one end of the roller l?, and that a slotted plate, m',secured to the rod Q, is adapted to the groove of this journal, theobject of this plate being to maintain the rollerl? in its properposition. The vertical rod Q passes through andis guided by the rail Bof the frame, andis connected at its lower end to a lever, R, which ispivoted to a bracket, n, secured to the rail B2, this lever being soweighted that, under the circumstances explained hereinafter it willraise the rod Q and perform the functions described above.

It will be understood that there is a trigger,

M, for each thread, and hence that there are in the present instancefour triggers for one set of four bobbins. The four triggers are pivotedindependently of each other to a springbolt,S,whicl1 passes through andis guided by the rail B of the frame, the peculiar construction of whichwill be best understood by reference to the perspective view, Fig. 4,Sheet 3. A bent arm, p, projects from the rear of the bolt S, andcarries a plate, q,having upwardlyprojecting lugs t, which, with the armp, form four recesses, and in each recess is pivoted a trigger by a pincommon to all four of the trig gers. The movement of the triggers islimited in the direction of the arrow, Fig. 4, by arod, u, and in theopposite direction by the rail B, Fig. 2. A spring, V, contained withina slot in the bolt and confined between one end of the slot and a platebearing against a flange of the rail B, tends to force the said bolt inthe direction of the arrow, and part of this bolt is reduced inthickness, so as to form an inclined shoulder, x, faced with a steelplate, the reduced portion of the bolt passing through a slot, y, Fig.5,iu the vertical bar Q,tl1e rear of this bar having also a steel plate,the upper edge of which is ilush with the bottom of the slot. As long asall the threads continue to unwind from the bobbins, the carriers, bythe tension of their threads caused by the friction of the bobbin, willbe turned round on their spindles or pivots, and all the triggers willbe in the position shown in Fig. 2, the upper feedroller will besupported solely by the rollers N N', and the rod Q will be retained inits depressed condition, owing to the bearing of its steel plate againstthe under edge of the steel plate on the shoulder w of the bolt S, andthe drawing ef all four threads through the feedrollers will continue.The moment one of the threads breaks or fails its bobbin and carrier andtrigger, owing to the preponderance of its arm i, will automaticallycause the unwinding of the cord on the carrier, and will assume thepositions shown in Fig. 3, and the end of the arm will be within rangeof cam-like projections T' on a shaft, T, which has its bearings on theframe, and which is driven in the direction of the arrow from the driving-sllaft through the medium of suitable gearing.

As indicated by dotted lines in Fig.l,a belt passing over a pulley onthe shaft G drives a shaft carrying acog-wheel gearing into awheel onthe shaft T. The latter imparts motion to the back feed-roller, N',through a pinion on the shaft gearing into a pinion on the roller. Theroller N is driven from the roller N' through the medium of anintermediatepinion. (Shown by dotted lines.)

When one of the projections on the shaft strikes the arm i of thetrigger the bolt will be pushed back, the rod Q will be released fromthe control of the bolt, and, influenced by the weighted lever R, willrise and elevate the upper feed-roller, P, as described above. Thefeeding will consequently be discontinued, and all the threads,including that which was (broken, between its bobbin and feed-rollers,

will be confined between the said roller P and the plate on the top ofthe rods. When the rod Q rises its steel plate, acting on the in clinedsteel plate of the bolt, will push thelatter back farther than it waspushed by the projection on the shaft T', so that the trigger will beentirely beyond range of' the projections until the rod Q is depressed.

When it is desired to stop the machine by hand this may be readily doneby simply pressing on the projectln g end w of the spring-bolt S so asto release the rod Q.

.After a broken thread has been pieced and the bobbin has been turneduntil the tension on the thread lifts the trigger, the rollerP and rod Qmay be depressed until the former bears on the other rollers and the endof the bolt, owing toits spring, assumes its former' position, Fig. 2.

Instead of mounting each bobbin H on a tube attached to a carrier, thebobbin may be mounted directly on a spindle, h2, adapted to bearings inthe frame, and having the cordf', which is connected to the trigger,wound on the spindle by the tension or friction of the yarns or threads,as illustrated in the modification, Fig. 7.

Instead of causing the friction of the bobbin on the tube or spindle tocontrol the stopmotion trigger through the medium of a cord, f', othermechanical devices-such as a lever or cam-may be employed. Any of theordinary braking appliances may be combined with the rod Q andintervening actuating mechanism for this purpose. I may state, however,that I prefer as a means of stopping the spindle a device which formsthe subject of a separate application for a patent filed by me November30, 1880, serial No. 21,368, and which may be briefly described asfollows: When the rod Q rises the cord D, which drives the spindle, isslack, and this cord is griped between a jaw on the lower end of the rodQ and a fixed jaw, so that the motion of the spindle must be arrested;but when the rod Q is depressed a pulley on the lever R will tighten thecord, which will at the same time be released from the jaws.

I do not desire to claim, broadly, in this application the combinationof the camshaft, stop-motion trigger, and spring-bolt with a rod orlever which is adapted to be supported by IOC IIO

the saidl bolt, and which, when released, pushes the trigger back outofthe Way of the rotating cam-shaft, as this combination forms thesubjectof a separate application iiled by me April 30, 1880, serial No.8,753; nor do I desire to claim in this application the special meansshown for counterbalancing vthe trigger, as this forms the subject of aseparate application filed by myself and T. A. Boyd, May 7, 1880, serialNo. 9,180.

I claim as my invention- 1. The combination of winding mechanism,

spindle, and carrier with a stop-motion trigger connected to oroperating in connection therewith, said carrier having a crank-pin forthe thread to bear against, substantially as specied.

2. lThe combination of winding mechanism and carrier or spindle on whichthe bobbin is fitted with a stop-motion trigger having an y armconnected by a cord to the said carrier or spindle, all substantially asset forth.

3. The combination of the ixed spindle J, the carrier I, the tube h,tted and secured to the carrier and supported by the spindle,substantially asV described.

4. The combination of the bracket K and spindle with the carrier I andstops on the bracket for limiting the movement of the carrier.

5. The combination of the rollers N N and driving mechanism, the rollerP, and a rod,

Q, carrying said roller P, and devices for irnparting an upward tendencyto said rod with a stop-motion trigger, and a spring-bolt for retainingand releasing the rod in obedience to the action of said trigger.

6.- The combination of rollers N N and rod Q, having a plate, m, withthe roller P, carried by said rod, substantially as described, Wherebyon the raising of the said rodthe roller P will rest on said plate m.

7. The combination of the rollers N N and movable rod Q, having a plate,m, and slotted plate m', with the roller P, having a grooved iournaladapted to said slotted plate, as set forth. i'

8. The combination of the frame, rollers N N', and driving mechanism,the roller P, and rod Q, carrying said roller P,and devices forimparting an upward tendency to said rod, with a spring-bolt forretaining the rod, and having an end, w, projecting beyond theframe-rail, as and for the purpose set forth.

In testimony whereof I have signed my name to this speciication in thepresence of two subscribin g witnesses.

JOHN BOYD.

Witnesses:

JAnms F. ToBIN, HARRY SMITH.

